石墨烯
材料科学
氧化物
X射线光电子能谱
拉曼光谱
金属
合金
氧化石墨烯纸
化学气相沉积
化学工程
过氧化氢
纳米技术
石墨烯泡沫
铜
冶金
化学
工程类
物理
有机化学
光学
作者
Shanshan Chen,Lola Brown,Mark Levendorf,Weiwei Cai,Sang Gyu Ju,Jonathan D. Edgeworth,Xuesong Li,Carl W. Magnuson,Aruna Velamakanni,Richard D. Piner,Junyong Kang,Jiwoong Park,Rodney S. Ruoff
出处
期刊:ACS Nano
[American Chemical Society]
日期:2011-01-28
卷期号:5 (2): 1321-1327
被引量:1115
摘要
The ability to protect refined metals from reactive environments is vital to many industrial and academic applications. Current solutions, however, typically introduce several negative effects, including increased thickness and changes in the metal physical properties. In this paper, we demonstrate for the first time the ability of graphene films grown by chemical vapor deposition to protect the surface of the metallic growth substrates of Cu and Cu/Ni alloy from air oxidation. In particular, graphene prevents the formation of any oxide on the protected metal surfaces, thus allowing pure metal surfaces only one atom away from reactive environments. SEM, Raman spectroscopy, and XPS studies show that the metal surface is well protected from oxidation even after heating at 200 °C in air for up to 4 h. Our work further shows that graphene provides effective resistance against hydrogen peroxide. This protection method offers significant advantages and can be used on any metal that catalyzes graphene growth.
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